
import java.util.*;public class hello
{
	public static void main(String[] args)
	{
		System.out.println("小明:"+"hello,world!");
		Scanner on=new  Scanner(System.in);//不需要输入
		System.out.println(on.nextLine());
		Scanner a=new Scanner(System.in);
		System.out.println("100-"+a.nextInt()+"="+(100-a.nextInt()));//没有逗号,这句输入两个数字
		int price=a.nextInt();//需要输入
		System.out.println("100-"+price+"="+(100-price));
		System.out.print((float)price+" "+(double)price);//double与float保留一样
		//System.out.println(on);//错误
	}
}
